The SP 3000 Niveaumat will automatically top up evaporated water in fresh and salt water aquariums. It comprises a Niveaumat SP 3000 peristaltic pump with a directly connected float switch. The float switch is installed in the aquarium or filter tank at the desired level using its holding unit. As the level drops the Niveaumat SP 3000 automatically tops up the tank with water from a reservoir (not supplied).